//
//  SecondViewController.h
//  UI29_Block
//
//  Created by Scott on 16/1/21.
//  Copyright © 2016年 Scott. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController

// 声明一个block属性.
@property (nonatomic, copy) void (^block)(NSString *);












@end
